[racket] cgi dynamic link

Hi all,
i have a problem within the creation of "dynamic links" :
I have a racket blog, and i have a function who takes all posts from a
database (posts = body + title ) and creates a link (make-url ... request)
with the title who refers to a new page that display the body. This
perfectly works.
Now, i want to execute the same things but using the cgi.
For example, for create a link to /hello, i have a function
(lambda (query) '(html (body (div "hey all")))) who, when i'm connecting
with the browser at localhost:8080/hello, displays "hey all". This is good.
Now, i have another webpage, /myblog, who displays the title of all my
posts. But i don't know how can i "transform" this title into a link that
would lead me to a page where the title+body would be displayed ...
Thanks for your help,
-mw
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